Remove warning for ref cleanup function (#28883)

Resources
- RFC: reactjs/rfcs#205
- Warning implemented in #22313
- Warning enabled in #23145
- Feature added in #25686

We have warned to prevent the old behavior since 18.0.0.

The new feature has been on in canary for a while but still triggering
the warning. This PR cleans up the warning for 19

DiffTrain build for commit db913d8.

Author: jackpope

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-dev.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<fbc5f0d556063e18e8065897a4edae21>>
+ * @generated SignedSource<<72055afa4818e8a565d07875c49b2d9d>>
  */
 
 'use strict';
@@ -16185,28 +16185,20 @@ function safelyDetachRef(current, nearestMountedAncestor) {
         }
       }
     } else if (typeof ref === 'function') {
-      var retVal;
-
       try {
         if (shouldProfile(current)) {
           try {
             startLayoutEffectTimer();
-            retVal = ref(null);
+            ref(null);
           } finally {
             recordLayoutEffectDuration(current);
           }
         } else {
-          retVal = ref(null);
+          ref(null);
         }
       } catch (error) {
         captureCommitPhaseError(current, nearestMountedAncestor, error);
       }
-
-      {
-        if (typeof retVal === 'function') {
-          error('Unexpected return value from a callback ref in %s. ' + 'A callback ref should not return a function.', getComponentNameFromFiber(current));
-        }
-      }
     } else {
       // $FlowFixMe[incompatible-use] unable to narrow type to RefObject
       ref.current = null;
@@ -22986,7 +22978,7 @@ identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transition
   return root;
 }
 
-var ReactVersion = '19.0.0-canary-c4e3bea9';
+var ReactVersion = '19.0.0-canary-acecb093';
 
 /*
  * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol

compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION

@@ -1 +1 @@
-368202181e772d411b2445930aea1edd9428b09b
+db913d8e17db25045e0518f3621f1640f2390525

compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-dev.fb.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<6bbaf37a7e6d0c6b86bd687aa4e09ebe>>
+ * @generated SignedSource<<d1fd7d33d65e21b9395d92b4c9c241c6>>
  */
 
 'use strict';
@@ -19444,28 +19444,20 @@ function safelyDetachRef(current, nearestMountedAncestor) {
         }
       }
     } else if (typeof ref === 'function') {
-      var retVal;
-
       try {
         if (shouldProfile(current)) {
           try {
             startLayoutEffectTimer();
-            retVal = ref(null);
+            ref(null);
           } finally {
             recordLayoutEffectDuration(current);
           }
         } else {
-          retVal = ref(null);
+          ref(null);
         }
       } catch (error) {
         captureCommitPhaseError(current, nearestMountedAncestor, error);
       }
-
-      {
-        if (typeof retVal === 'function') {
-          error('Unexpected return value from a callback ref in %s. ' + 'A callback ref should not return a function.', getComponentNameFromFiber(current));
-        }
-      }
     } else {
       // $FlowFixMe[incompatible-use] unable to narrow type to RefObject
       ref.current = null;
@@ -26056,7 +26048,7 @@ identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transition
   return root;
 }
 
-var ReactVersion = '19.0.0-canary-b83624af';
+var ReactVersion = '19.0.0-canary-f7d342a2';
 
 /*
  * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol

compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<1c5ee0ee0fef4e85b317999b53699b5f>>
+ * @generated SignedSource<<067d8fee132e988882b3b0dcb3c6e6da>>
  */
 
 'use strict';
@@ -19491,28 +19491,20 @@ function safelyDetachRef(current, nearestMountedAncestor) {
         }
       }
     } else if (typeof ref === 'function') {
-      var retVal;
-
       try {
         if (shouldProfile(current)) {
           try {
             startLayoutEffectTimer();
-            retVal = ref(null);
+            ref(null);
           } finally {
             recordLayoutEffectDuration(current);
           }
         } else {
-          retVal = ref(null);
+          ref(null);
         }
       } catch (error) {
         captureCommitPhaseError(current, nearestMountedAncestor, error);
       }
-
-      {
-        if (typeof retVal === 'function') {
-          error('Unexpected return value from a callback ref in %s. ' + 'A callback ref should not return a function.', getComponentNameFromFiber(current));
-        }
-      }
     } else {
       // $FlowFixMe[incompatible-use] unable to narrow type to RefObject
       ref.current = null;
@@ -26471,7 +26463,7 @@ identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transition
   return root;
 }
 
-var ReactVersion = '19.0.0-canary-f6aae78f';
+var ReactVersion = '19.0.0-canary-f9159889';
 
 /*
  * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol